The rankings were determined by examining Bureau of Labor Statistics Occupational Employment Statistics to find the cities with the highest percentage of total jobs that are classified as STEM-intensive – science, technology, engineering and math.

Huntsville landed at number three on the list, with almost 16 percent of workers in the STEM field. The most common STEM job in the city was aerospace engineer with an average salary of $80,483 for all tech jobs.

“There are nearly 4,000 aerospace engineers working in Huntsville, Alabama, more than any other major metro area in the United States. Aerospace and aviation companies like Boeing and Blue Origin employ thousands of those workers and have plans for expansion in the near future. Huntsville has a rich history in aerospace engineering, as NASA’s Saturn V rockets were constructed there in 1960s,” 24/7 Wall Street reported.